Bunch of soft cocks.
At a recent swap day I started on the beers at about 11 am, then got stuck into mashing on a 70 L esky system complete with collapsing (and I mean collapsing) camping table while simultaneously running a 50 L HERMS (I was previously completely unfamiliar with HERMS) , drinking beer, eating abundant amounts of food, discussing brewing and beer, watching fantasy football and eventually running off into 6 or so cubes. I had some others helping out so don't want to take too much credit but their sobriety was no better than mine. As a non-sober collective we did pretty well.
If I struggled to down a few pints during my own brewdays, I reckon the collapsing table would have meant the entire mash from the 70 L system would have ended up on the floor rather than about 1.5 litres of it. I've had plenty of practice with various stages of inebriation during brewing and while not many brewdays are completely problem free (not even the sober ones), there's very few problems that haven't had a solution
Brew pissed as often as you can I say. If you can think your way round problems when you've knocked a couple back, brewing becomes a much more relaxed and simple process. It's also a sacrifice to the beer gods.
Of course the OHS officer might get upset since you are dealing with hot and heavy stuff but the OHS officer isn't welcome in my home.